Persistent identifier https://phaidra.univie.ac.at/o:1529864
Handle https://hdl.handle.net/11353/10.1529864
URI https://valep.vc.univie.ac.at/virtualarchive/public/Hempel_Diane_Hempel_to_Ina_Carnap_Carnap_1963-01-07_L_Original/dv:848162